package com.cet.designpatterns.bridge;

/**
 * @program: algorithm
 * @description: 抽象
 * @author: 陈恩涛
 * @create: 2021-09-08 23:07
 **/
public abstract class Phone {

    protected Brand brand;

    public Phone(Brand brand) {
        this.brand = brand;
    }

    public abstract void open();

    public abstract void close();

    public abstract void call();
}
